“SE SEUS PROJETOS FOREM PARA UM ANO,SEMEIE O GRÂO.SE FOREM PARA DEZ ANOS,PLANTE UMA ÁRVORE.SE FOREM PARA CEM ANOS,EDUQUE O POVO.”

“Sixty years ago I knew everything; now I know nothing; education is a progressive discovery of our own ignorance. Will Durant”

OBRIGADO DEUS PELA VIDA,PROTEGENOS E GUARDANOS DE TODO MAL


AUTOR DO BLOG ENG. ARMANDO CAVERO MIRANDA SAO PAULO BRASIL

terça-feira, 10 de setembro de 2013

An Overview on Amorphous Core Transformers Man Mohan Electrical Engineering Department


Abstract
In this paper, an amorphous core transformer is highlighted. Configuration of amorphous C-core and its magnetisation characteristic (B-H) are described. Factors affecting the design are also discussed as a comparison with a conventional transformer. It is concluded that, advantages with amorphous core transformers are - low core losses, low magnetising current, less zero sequence current, less noise, higher efficiency and longer life; however the disadvantages are higher inrush current, more harmonic problem, bigger size and higher initial cost. The problem of third harmonic may be eliminated by adopting zig-zag connection in place of star connection. Purpose of this article is to provide a knowledge base about amorphous core transformers, to students of transformer design, by discussing some necessary issues. __________________________________________________________________________________________ LINK
http://www.mediafire.com/?1kicbyeispkdgqe

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